Magnet-charger.



P. LYNCH 8; H. wocmm.

1 MAGNET CHARGER. APPLICATION many 15. m4.

- Patented Sept. 7, 1915.

' W5 Pluiapll lac/a Jen -y 00/121,611

7 To all whom it may concern:

' the charger UNITED STATES PATENT OFFICE.

PHILIP LYNCH AND HENRY WOCHNER, OF ROCK ISLAND, ILLINOIS.

MAGNET-CHARGER.

Patented Sept. v, 1915.

Application filed May 15, 1914. Serial No. 838,851.

Be it known that we, PHILIP LYNCH and HENRY WOCHNER, of Rock Island, in the county of Rock Island and State of Illinois, have invented certain useful Improvements in Magnet-Chargers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains 'to make and use the same.

The primary object of this invention is to provide a simple and highly eflicient apparatus for electrically charging permanent magnets of magneto-generators.

A further object is to enable magnets of different. sizes to be charged with equal facility; and further objects are to prevent loss of magnetism after the current from has been discontinued; and also means for completing the circuit between the poles of the permanent magnet vwhile being charged.

In the accompanying is a plan view. Fig. 2 is an end elevation. Fig. 3 is a sectional view through one of the coils. Figs. 4 and 5 show the separate drawings, Figure 1 contacting members for cooperating with a permanent magnet 6,

" through the instrumentality the magnet poles.

Referring to the drawings, 1 designates a base whereon is mounted a permanent coil 2 and a sliding coil 3, the casings of the two coils being electrically connected through the agency of guides 4 mounted on base 1 and whereon the coil 3 may readily slide in either direction. Each coil is lohaving a central opening therethrough, and one end of the coil wire is soldered to the core and the other to the insulated terminal 5. To these terminals of the two coils are connected wires leading from a generator (not shown) and which may consist of dry cells, a storage battery, or any source of direct current of six volts, or thereabout. central openings of these coils are designed to fit the poles of as shown in Figs. 1 to be charged of the coils. In order to complete the circuit between the pole pieces the two coils are provided with cooperating contacting members and 8, the former, which is of L-shape, being mounted in the permanent coil 2, while the member 8, which is mounted in the coil 3, consists of a single straight piece of metal. This latter is designed to contact with that and 2, and which magnet is portion of the member 7 which parallels the casings of the two coils. Such paralleling portion is suificientlylong so that a part thereof will always intersect the axis of the opening in the movable coil, thus insuring contact between the members in the various positions into which the coil 3 may be adusted. The two contacting members 7 and 8 are movable longitudinally of their respectrve coils to insure contact with magnets of different lengths, and'they are relatively ad- ]ustable while still permitting contact between themselves. Whatever be the position of the coil 3 the electrical connection is always maintained between the two coils through guides 4.. Under ordinary conditions a permanent magnet may be fully charged in less than one minute. After the magnet has been fully charged and before removing it from the coils a conductor bar 9 is placed upon the two poles of the magnet, and such bar is retained on the magnet until the latter has been placed in position on the magneto, thus insuring the retention of the magnetism.

In practice, the sliding coil 3 is adjusted relatively to the permanent coil, according to the size of .the magnet to be energized, and the poles of the magnet are inserted into the two coils until their ends contact with the ends of the contacting members 7 and 8. Care must be taken to see that these members 7 and 8 are inengagement with each other so as to maintain the circuit between the poles of the magnet. Ordinarily current for charging the permanent magnet need not be applied for longer than thirty seconds, and frequently less time will suffice. As before stated, after the current is discontinued the bar 9 is placed on the pole pieces of the magnet and retained thereon having openings to accommodate poles of a permanent adjustable c011 forming electrical connections between the two coils, and contacting gage, said contacting members being de signed to maintain contact in the dlflerent relative posltlons of the colls.

magnet, guiding means for the In testimony this specification scribing Witne E W. SCHOEDE,

. Dames. 

